Absolutely, he only took a leave of absence (rather than dropping out) to try software, and once that took off in a huge way he actually dropped out.
It's also important to mention he got in at 73, and left late 75 with 2-3 years of education, and that he chose his major (applied math) because there was a rule that you could get into any class with the angle of applying math to it. So he was known then to go to many classes, as he still is to this day (he spends a huge chunk of his time on education, mostly books but also courses).
So yeah not a drop-out in a technical or figurative sense.
It's also important to mention he got in at 73, and left late 75 with 2-3 years of education, and that he chose his major (applied math) because there was a rule that you could get into any class with the angle of applying math to it. So he was known then to go to many classes, as he still is to this day (he spends a huge chunk of his time on education, mostly books but also courses).
So yeah not a drop-out in a technical or figurative sense.